S
M
T
W
T
F
S
30
77°
53°
31
77°
54°
1
76°
58°
2
75°
58°
3
76°
53°
4
75°
51°
5
74°
51°
6
73°
52°
7
73°
51°
8
75°
50°
9
76°
51°
10
76°
49°
11
74°
49°
12
74°
51°
13
73°
50°
14
73°
52°
15
78°
51°
16
79°
53°
17
78°
54°
18
78°
54°
19
71°
45°
20
76°
47°
21
69°
45°
22
Hist. Avg.
74°
48°
23
Hist. Avg.
73°
48°
24
Hist. Avg.
73°
47°
25
Hist. Avg.
72°
47°
26
Hist. Avg.
72°
46°
27
Hist. Avg.
72°
46°
28
Hist. Avg.
71°
46°
29
Hist. Avg.
71°
45°
30
Hist. Avg.
70°
45°
1
Hist. Avg.
70°
44°
2
Hist. Avg.
69°
44°
3
Hist. Avg.
69°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Washington Township
Washington Township's September 2026 forecast shows daily high temperatures ranging from 69° to 79°, with overnight lows between 45° and 58°. The average high for September is 75° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Washington Township. See also: October | November | December.
